A hydroelectric dam has 28 turbines, each of which has a maximum power output of 9 MW. The turbines are several decades old, however, and are to be replaced with newer turbines, which are more efficient and have a higher maximum output power. If each of the newer turbines has a maximum output power of 16 MW, by how much does the maximum output power of the power station increase?
Which of the following statements correctly describe the advantages of building a hydroelectric dam?
A lake behind a dam contains 15 km3 of water. The mass of the water is kg. The average height of the water above the river beyond the dam is 60 m. How much gravitational potential energy is stored in the lake?
The Three Gorges Dam is a dam of the Yangtze River in China. It is the largest hydroelectric dam in the world, with an installed capacity of MW.
The capacity factor of a power plant is the percentage of the installed capacity that is actually supplied to the electricity grid. The capacity factor of the Three Gorges Dam is . What is its actual output power?
Which of the following statements correctly describe the disadvantages of building a hydroelectric dam?
What type of electric current do the turbines in a hydroelectric dam produce?
A hydroelectric dam has 24 identical turbines in it. If the maximum power output of 1 turbine is 18 MW, what is the maximum power output of the whole power station?